背景介绍
keepalived构建于lvs之上，并实现了vrrp协议
这里要配置机器A 10.5.5.5/16与机器B 10.5.4.4/16 共用一个虚拟ip 10.5.1.1
haproxy作者Willy Tarreau谈heartbeat与keepalived选择
安装
因为都是root操作，索性apt-get install keepalived
配置
先copy官方的sample配置sudo cp /usr/share/doc/keepalived/samples/keepalived.conf.sample /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
acassen
}
notification_email_from Alexandre.Cassen@firewall.loc
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id LVS_DEVEL
}
vrrp_instance VI_1 {
interface eth0
virtual_router_id 50
nopreempt
priority 100 # 主服务器A上配置为100 从服务器B上配置50
advert_int 1
virtual_ipaddress {
10.5.1.1
}
}
- 配置完毕之后分别在AB上启动keepalived
- kill A的keepalived
- 通过
ip addr命令观察B上ip地址变化